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Chemistry · Structure of atom

हिन्दी

Which of the following pairs of orbitals will experience the larger effective nuclear charge in a multi-electron system?

  1. \( 2s \) and \( 3s \)
  2. \( 4d \) and \( 4f \)
  3. \( 3d \) and \( 3p \)
  4. \( 5s \) and \( 4s \)

Correct answer · Option 3

\( 3d \) and \( 3p \)

Explanation

Penetration power decreases in the order \( s > p > d > f \). Orbitals with higher penetration experience less shielding and thus a larger effective nuclear charge (\( 3p > 3d \)).
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